Results 71 to 80 of about 2,276 (208)

Pareto‐Optimized Mobile‐Sink Routing for Energy‐Efficient Wireless Sensor Networks

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
Wireless sensor networks (WSNs) are inherently constrained by limited battery resources, making the design of energy‐efficient communication protocols critical for extending network lifetime. Cluster‐based routing, enhanced through optimization algorithms, has emerged as a promising solution to balance energy consumption and improve scalability.
Ayman A. Alharbi, Emad S. Hassan, Idris H. Smaili, Amir Afzal   +3 more
wiley   +1 more source

Improved Scattering Center Extraction From ISAR Data Using Simplex Optimization

International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.
Inverse synthetic‐aperture radar (ISAR) techniques have started to play a key role in calculating the radar cross‐section (RCS) values of objects from near‐field measurements. It is assumed that the scene (or the scatterer) is composed of scattering centers (SCs) whose locations and complex amplitudes are found from the ISAR data.
Bahar Ugurdogan, A. Arif Ergin, Andrea Francesco Morabito   +2 more
wiley   +1 more source

Analysis for sparse channel representation based on dictionary learning in massive MIMO systems

IET Communications, Volume 18, Issue 20, Page 1728-1740, December 2024.
We provide a qualitative analytical formula for dictionary sparse representation accuracy and establish an optimal upper bound. Abstract The accuracy analysis of dictionary sparse representation for channels in massive MIMO systems is a relatively unexplored field.
Qing‐Yang Guan
wiley   +1 more source

A method of 2D and 3D display of radar terminal base on programmable pipeline

IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2513-2520, December 2024.
In contrast to the ideal 3D display for meteorological radar, there is no 3D mode in the military engineering field. How to realise the 2D and 3D display for general radar terminal efficiently using the local graphics processing unit (GPU), which is impossible to realise with the traditional method of field programmable gate array now, has became an ...
Zhenkui Miao, Gongjian Zhou, Keyi Li, Xiangyang Pan   +3 more
wiley   +1 more source

Near‐field scattering centre modelling for complex targets

IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2657-2666, December 2024.
In this paper, the authors presented the near‐field scattering centre model with the dependence description of radar distance. The model can be used to quickly calculate the near‐field scattering field and radar image features of complex targets. Abstract The parametric scattering centre (SC) model of the target has been widely used in the rapid ...
Yanxi Chen, Kunyi Guo, Zhouyang Liu, Xinqing Sheng   +3 more
wiley   +1 more source

Three dimensional scattering center imaging techniques [PDF]

Two methods to image scattering centers in 3-D are presented. The first method uses 2-D images generated from Inverse Synthetic Aperture Radar (ISAR) measurements taken by two vertically offset antennas.
Burnside, W. D., Younger, P. R.
core   +1 more source

River Run Off Measurement With SAR Along Track Interferometry [PDF]

, 2004
The paper summarizes the need for global space borne river run-off measurements. It reports about an airborne SAR experiment aimed to measure the surface velocity of the river Isar in Bavaria / Germany.
Eineder, Michael, Horn, Ralf, Maurer, Thomas, Runge, Hartmut, Suchandt, Steffen   +4 more
core  

A novel multi‐target TBD scheme for GNSS‐based passive bistatic radar

IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2497-2512, December 2024.
The paper presents a novel approach to enhance low‐altitude surveillance in urban and suburban areas using GNSS‐based passive bistatic radar systems. Despite challenges such as weak signal power budget and complex multi‐target tracking, the proposed method introduces a track‐before‐detect (TBD) strategy with a DCCF‐based cluster centroid extraction ...
Tao Tang, Pengbo Wang, Peng Zhao, Hongcheng Zeng, Jie Chen   +4 more
wiley   +1 more source

3-D High-Resolution ISAR Imaging for Noncooperative Air Targets

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
This article uses the inverse synthetic aperture radar (ISAR) imaging method to present real-world tests on 3-D radar imaging of noncooperative air targets. Initially, the fundamentals of 3-D ISAR are introduced.
Marcin Kamil Baczyk, Piotr Samczynski, Jedrzej Drozdowicz, Maciej Wielgo, Jakub Sobolewski, Marek Ciesielski, Jakub Julczyk, Krzysztof Stasiak, Grzegorz Pietrzykowski, Karol Abratkiewicz, Maciej Soszka   +10 more
doaj   +1 more source

HRRPGraphNet: Make HRRPs to be graphs for efficient target recognition

Electronics Letters, Volume 60, Issue 22, November 2024.
Conventional techniques for High‐Resolution Range Profiles (HRRP) target recognition frequently encounter difficulties due limited data under non‐cooperated circumstances. We propose a novel use of graph‐theory of HRRPs and convert traditional sequence‐based recognition into a sophisticated graph classification task to achieve efficient target ...
Lingfeng Chen, Xiao Sun, Zhiliang Pan, Qi Liu, Zehao Wang, Xiaolong Su, Zhen Liu, Panhe Hu   +7 more
wiley   +1 more source